escpos module fixed for python 3?
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Adusso
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916de838e0
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@ -1,54 +1,56 @@
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""" ESC/POS Commands (Constants) """
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from escpos.utils import hex2bytes
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# Feed control sequences
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CTL_LF = b'\x0a' # Print and line feed
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CTL_FF = b'\x0c' # Form feed
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CTL_CR = b'\x0d' # Carriage return
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CTL_HT = b'\x09' # Horizontal tab
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CTL_VT = b'\x0b' # Vertical tab
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CTL_LF = hex2bytes('0a') # Print and line feed
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CTL_FF = hex2bytes('0c') # Form feed
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CTL_CR = hex2bytes('0d') # Carriage return
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CTL_HT = hex2bytes('09') # Horizontal tab
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CTL_VT = hex2bytes('0b') # Vertical tab
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# Printer hardware
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HW_INIT = b'\x1b\x40' # Clear data in buffer and reset modes
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HW_SELECT = b'\x1b\x3d\x01' # Printer select
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HW_RESET = b'\x1b\x3f\x0a\x00' # Reset printer hardware
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HW_INIT = hex2bytes('1b40') # Clear data in buffer and reset modes
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HW_SELECT = hex2bytes('1b3d01') # Printer select
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HW_RESET = hex2bytes('1b3f0a00') # Reset printer hardware
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# Cash Drawer
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CD_KICK_2 = b'\x1b\x70\x00' # Sends a pulse to pin 2 []
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CD_KICK_5 = b'\x1b\x70\x01' # Sends a pulse to pin 5 []
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CD_KICK_2 = hex2bytes('1b7000') # Sends a pulse to pin 2 []
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CD_KICK_5 = hex2bytes('1b7001') # Sends a pulse to pin 5 []
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# Paper
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PAPER_FULL_CUT = b'\x1d\x56\x00' # Full cut paper
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PAPER_PART_CUT = b'\x1d\x56\x01' # Partial cut paper
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PAPER_FULL_CUT = hex2bytes('1d5600') # Full cut paper
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PAPER_PART_CUT = hex2bytes('1d5601') # Partial cut paper
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# Text format
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TXT_NORMAL = b'\x1b\x21\x00' # Normal text
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TXT_2HEIGHT = b'\x1b\x21\x10' # Double height text
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TXT_2WIDTH = b'\x1b\x21\x20' # Double width text
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TXT_4SQUARE = b'\x1b\x21\x30' # Quad area text
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TXT_UNDERL_OFF = b'\x1b\x2d\x00' # Underline font OFF
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TXT_UNDERL_ON = b'\x1b\x2d\x01' # Underline font 1-dot ON
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TXT_UNDERL2_ON = b'\x1b\x2d\x02' # Underline font 2-dot ON
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TXT_BOLD_OFF = b'\x1b\x45\x00' # Bold font OFF
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TXT_BOLD_ON = b'\x1b\x45\x01' # Bold font ON
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TXT_FONT_A = b'\x1b\x4d\x00' # Font type A
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TXT_FONT_B = b'\x1b\x4d\x01' # Font type B
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TXT_ALIGN_LT = b'\x1b\x61\x00' # Left justification
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TXT_ALIGN_CT = b'\x1b\x61\x01' # Centering
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TXT_ALIGN_RT = b'\x1b\x61\x02' # Right justification
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TXT_NORMAL = hex2bytes('1b2100') # Normal text
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TXT_2HEIGHT = hex2bytes('1b2110') # Double height text
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TXT_2WIDTH = hex2bytes('1b2120') # Double width text
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TXT_4SQUARE = hex2bytes('1b2130') # Quad area text
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TXT_UNDERL_OFF = hex2bytes('1b2d00') # Underline font OFF
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TXT_UNDERL_ON = hex2bytes('1b2d01') # Underline font 1-dot ON
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TXT_UNDERL2_ON = hex2bytes('1b2d02') # Underline font 2-dot ON
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TXT_BOLD_OFF = hex2bytes('1b4500') # Bold font OFF
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TXT_BOLD_ON = hex2bytes('1b4501') # Bold font ON
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TXT_FONT_A = hex2bytes('1b4d00') # Font type A
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TXT_FONT_B = hex2bytes('1b4d01') # Font type B
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TXT_ALIGN_LT = hex2bytes('1b6100') # Left justification
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TXT_ALIGN_CT = hex2bytes('1b6101') # Centering
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TXT_ALIGN_RT = hex2bytes('1b6102') # Right justification
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# Barcode format
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BARCODE_TXT_OFF = b'\x1d\x48\x00' # HRI barcode chars OFF
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BARCODE_TXT_ABV = b'\x1d\x48\x01' # HRI barcode chars above
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BARCODE_TXT_BLW = b'\x1d\x48\x02' # HRI barcode chars below
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BARCODE_TXT_BTH = b'\x1d\x48\x03' # HRI barcode chars both above and below
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BARCODE_FONT_A = b'\x1d\x66\x00' # Font type A for HRI barcode chars
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BARCODE_FONT_B = b'\x1d\x66\x01' # Font type B for HRI barcode chars
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BARCODE_HEIGHT = b'\x1d\x68\x64' # Barcode Height [1-255]
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BARCODE_WIDTH = b'\x1d\x77\x03' # Barcode Width [2-6]
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BARCODE_UPC_A = b'\x1d\x6b\x00' # Barcode type UPC-A
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BARCODE_UPC_E = b'\x1d\x6b\x01' # Barcode type UPC-E
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BARCODE_EAN13 = b'\x1d\x6b\x02' # Barcode type EAN13
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BARCODE_EAN8 = b'\x1d\x6b\x03' # Barcode type EAN8
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BARCODE_CODE39 = b'\x1d\x6b\x04' # Barcode type CODE39
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BARCODE_ITF = b'\x1d\x6b\x05' # Barcode type ITF
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BARCODE_NW7 = b'\x1d\x6b\x06' # Barcode type NW7
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BARCODE_TXT_OFF = hex2bytes('1d4800') # HRI barcode chars OFF
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BARCODE_TXT_ABV = hex2bytes('1d4801') # HRI barcode chars above
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BARCODE_TXT_BLW = hex2bytes('1d4802') # HRI barcode chars below
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BARCODE_TXT_BTH = hex2bytes('1d4803') # HRI barcode chars both above and below
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BARCODE_FONT_A = hex2bytes('1d6600') # Font type A for HRI barcode chars
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BARCODE_FONT_B = hex2bytes('1d6601') # Font type B for HRI barcode chars
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BARCODE_HEIGHT = hex2bytes('1d6864') # Barcode Height [1-255]
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BARCODE_WIDTH = hex2bytes('1d7703') # Barcode Width [2-6]
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BARCODE_UPC_A = hex2bytes('1d6b00') # Barcode type UPC-A
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BARCODE_UPC_E = hex2bytes('1d6b01') # Barcode type UPC-E
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BARCODE_EAN13 = hex2bytes('1d6b02') # Barcode type EAN13
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BARCODE_EAN8 = hex2bytes('1d6b03') # Barcode type EAN8
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BARCODE_CODE39 = hex2bytes('1d6b04') # Barcode type CODE39
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BARCODE_ITF = hex2bytes('1d6b05') # Barcode type ITF
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BARCODE_NW7 = hex2bytes('1d6b06') # Barcode type NW7
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# Image format
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S_RASTER_N = b'\x1d\x76\x30\x00' # Set raster image normal size
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S_RASTER_2W = b'\x1d\x76\x30\x01' # Set raster image double width
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S_RASTER_2H = b'\x1d\x76\x30\x02' # Set raster image double height
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S_RASTER_Q = b'\x1d\x76\x30\x03' # Set raster image quadruple
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S_RASTER_N = hex2bytes('1d763000') # Set raster image normal size
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S_RASTER_2W = hex2bytes('1d763001') # Set raster image double width
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S_RASTER_2H = hex2bytes('1d763002') # Set raster image double height
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S_RASTER_Q = hex2bytes('1d763003') # Set raster image quadruple
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@ -12,10 +12,11 @@ import qrcode
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import operator
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from PIL import Image
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from constants import *
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from exceptions import *
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from escpos.utils import *
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from escpos.constants import *
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from escpos.exceptions import *
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class Escpos:
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class Escpos(object):
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""" ESC/POS Printer object """
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device = None
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@ -40,7 +41,7 @@ class Escpos:
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self._raw(S_RASTER_N)
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buffer = "%02X%02X%02X%02X" % (((size[0]//size[1])//8), 0, size[1], 0)
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self._raw(buffer.decode('hex'))
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self._raw(hex2bytes(buffer))
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buffer = ""
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while i < len(line):
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@ -49,7 +50,7 @@ class Escpos:
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i += 8
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cont += 1
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if cont % 4 == 0:
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self._raw(buffer.decode("hex"))
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self._raw(hex2bytes(buffer))
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buffer = ""
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cont = 0
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@ -11,9 +11,9 @@ import usb.util
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import serial
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import socket
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from escpos import *
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from constants import *
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from exceptions import *
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from escpos.escpos import *
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from escpos.constants import *
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from escpos.exceptions import *
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class Usb(Escpos):
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""" Define USB printer """
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@ -44,13 +44,13 @@ class Usb(Escpos):
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try:
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self.device.detach_kernel_driver(0)
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except usb.core.USBError as e:
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print "Could not detatch kernel driver: %s" % str(e)
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print("Could not detatch kernel driver: %s" % str(e))
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try:
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self.device.set_configuration()
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self.device.reset()
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except usb.core.USBError as e:
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print "Could not set configuration: %s" % str(e)
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print("Could not set configuration: %s" % str(e))
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def _raw(self, msg):
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@ -88,9 +88,9 @@ class Serial(Escpos):
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self.device = serial.Serial(port=self.devfile, baudrate=self.baudrate, bytesize=self.bytesize, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, timeout=self.timeout, dsrdtr=True)
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if self.device is not None:
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print "Serial printer enabled"
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print("Serial printer enabled")
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else:
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print "Unable to open serial printer on: %s" % self.devfile
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print("Unable to open serial printer on: %s" % self.devfile)
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def _raw(self, msg):
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@ -124,7 +124,7 @@ class Network(Escpos):
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self.device.connect((self.host, self.port))
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if self.device is None:
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print "Could not open socket for %s" % self.host
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print("Could not open socket for %s" % self.host)
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def _raw(self, msg):
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@ -153,7 +153,7 @@ class File(Escpos):
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self.device = open(self.devfile, "wb")
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if self.device is None:
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print "Could not open the specified file %s" % self.devfile
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print("Could not open the specified file %s" % self.devfile)
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def _raw(self, msg):
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@ -0,0 +1,9 @@
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try:
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bytes.fromhex
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def hex2bytes(hex_string):
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return bytes.fromhex(hex_string)
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except:
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def hex2bytes(hex_string):
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return hex_string.decode('hex')
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